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lm/ta-chitosan hydrochloride composite nanoparticles, its preparation method and application

A technology of composite nanoparticles and chitosan hydrochloride, applied in the field of emulsifiers, can solve the problems of loss of nutritional quality, affecting product storage stability and sensory properties, susceptibility to unstable oxidative degradation, etc., to improve stability , The effect of low preparation cost, excellent oxidation resistance and stable performance

Active Publication Date: 2020-11-03
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most applications of sunflower oil in the field of emulsifiers are its formulation as a continuous phase in emulsions, but its instability in emulsions and susceptibility to oxidative degradation can lead to loss of its nutritional quality and development of off-flavors, This in turn affects the storage stability and sensory properties of the product

Method used

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  • lm/ta-chitosan hydrochloride composite nanoparticles, its preparation method and application
  • lm/ta-chitosan hydrochloride composite nanoparticles, its preparation method and application
  • lm/ta-chitosan hydrochloride composite nanoparticles, its preparation method and application

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Embodiment 1

[0054] Embodiment 1 The preparation method of a kind of Pickering emulsion that the present embodiment relates to comprises the steps:

[0055] 1. Preparation of low methoxyl pectin / tannic acid colloidal complex

[0056] The low methoxyl pectin / tannic acid colloidal complex was prepared at room temperature 25°C and 200rpm magnetic stirring. Briefly, a 0.2 wt% aqueous tannic acid solution was added by mixing with a pipette tip with an aqueous solution of 0.8 wt% low-methoxyl pectin in which the concentration of tannic acid The mass ratio is 1:0. Use 0.1M HCl solution (0.1M HCl) or other acid solutions to adjust the pH value of the tannic acid and low methoxy pectin dispersion to 4.5, and then stir at room temperature for 2 hours to obtain low methoxy Pectin / tannin colloidal complex.

[0057] 2. Preparation of low-methoxy pectin / tannic acid-chitosan hydrochloride composite nanoparticles

[0058] First weigh chitosan hydrochloride powder and disperse it in distilled water, pl...

Embodiment 2

[0062] Embodiment 2 The preparation method of a kind of Pickering emulsion that the present embodiment relates to comprises the steps:

[0063] 1. Preparation of low methoxyl pectin / tannic acid colloidal complex

[0064] The low methoxyl pectin / tannic acid colloidal complex was prepared at room temperature 25°C and 250rpm magnetic stirring. Briefly, a 1.0 wt% aqueous tannic acid solution was added by mixing with a pipette tip with an aqueous solution of 0.85 wt% low-methoxyl pectin, in which low-methoxyl pectin was mixed with tannic acid, under magnetic stirring. The mass ratio is 1:0.4. The pH of the tannic acid and low-methoxyl pectin dispersion was adjusted to 5 using 0.1 M HCl, and then stirred at room temperature for 3 hours to obtain low-methoxyl pectin / tannic acid colloidal complexes.

[0065] 2. Preparation of low-methoxy pectin / tannic acid-chitosan hydrochloride composite nanoparticles

[0066] First weigh chitosan hydrochloride powder and disperse it in distilled ...

Embodiment 3

[0070] Embodiment 3 The preparation method of a kind of Pickering emulsion that the present embodiment relates to comprises the following steps:

[0071] 1. Preparation of low methoxyl pectin / tannic acid colloidal complex

[0072] The low methoxyl pectin / tannic acid colloidal complex was prepared at room temperature 25°C and 300rpm magnetic stirring. Briefly, a 0.5 wt% aqueous tannic acid solution was added by mixing with a pipette tip with an aqueous solution of 1.0 wt% low-methoxyl pectin, in which low-methoxyl pectin was mixed with tannic acid, under magnetic stirring. The mass ratio is 1:1. The pH of the tannic acid and low-methoxyl pectin dispersion was adjusted to 5.5 using 0.1 M HCl, and then stirred at room temperature for 2.5 hours to obtain low-methoxyl pectin / tannic acid colloidal complexes.

[0073] 2. Preparation of low-methoxy pectin / tannic acid-chitosan hydrochloride composite nanoparticles

[0074]First weigh chitosan hydrochloride powder and disperse it in ...

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Abstract

The invention discloses a preparation method for an LM / TA-chitosan hydrochloride composite nanoparticle. The preparation method comprises the following steps: mixing an aqueous low-methoxyl pectin solution with an aqueous tannic acid solution at room temperature, adjusting the pH value of the obtained colloidal dispersion, and carrying out a reaction to obtain a low-methoxyl pectin / tannic acid colloidal complex; and dispersing the colloidal compound in water to form a low-methoxyl pectin / tannic acid colloidal complex solution, and then subjecting the colloidal complex solution and a chitosan hydrochloride solution to a hybrid reaction so as to prepare the low-methoxyl pectin / tannin-chitosan hydrochloride composite nanoparticle. The invention also discloses a method for preparing a Pickering emulsion by using the composite nanoparticle. The composite nanoparticle provided by the invention has good oxidation resistance, dispersibility and emulsification properties; and the Pickering emulsion prepared by using the composite nanoparticle as an emulsifier has good physical stability and antioxidant activity, and can be widely used in food, medicine, cosmetics, and other fields.

Description

technical field [0001] The present invention relates to a preparation method of oil-water emulsion, in particular to a kind of LM / TA-chitosan hydrochloride composite nanoparticle, its preparation method and application, such as the use in the preparation of Pickering emulsion, which belongs to emulsifier technology field. Background technique [0002] Sunflower oil is an important edible oil. It contains a lot of essential unsaturated fatty acids such as linoleic acid, which can promote the regeneration and growth of human cells, protect skin health, and reduce the accumulation of cholesterol in the blood. Most applications of sunflower oil in the field of emulsifiers are its formulation as a continuous phase in emulsions, but its instability in emulsions and susceptibility to oxidative degradation can lead to loss of its nutritional quality and development of off-flavors, This in turn affects the storage stability and sensory properties of the product. [0003] Droplet in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/12C08L5/08C08L5/06A23L29/10
CPCA23L29/10C08J3/12C08J2305/08C08J2405/06
Inventor 章宝李小敏潘怡孟然李小龙刘文杰
Owner HEFEI UNIV OF TECH
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